I thought a re-radiating antenna may help the OP with the problem they have, but you also need to be aware of some limitations they have.
That is, namely that the 'GPS' receiver in the device may not simply use just the GPS(ie. US satellite system) but as they noted it also uses GLONASS(Russian system) too.
Some re radiating antennas are only set up to listen only for the GPS system, and not the GLONASS and GALLILEO systems all in unison.
Spec sheets need to be read on what the re radiating antenna can do.
But I reckon a re radiating antenna is probably the way forward on the OPs issue.
Arthur.
'99 D1 300Tdi Auto
'03 D2 Td5 Auto
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